QuakeIndex

explosion · reviewed by a seismologist

M 1.7ml

Earthquake near Connell, WA

USGS: 3 km WNW of Hatton, Washington

9:06 am PDT, Jun 8, 2018 · · -0.3 km deep · released about 10 lb of TNT

Every earthquake near Connell Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Franklin County 28 kmAdams County 37 kmGrant County 65 kmWalla Walla County 67 kmBenton County 80 kmColumbia County 92 kmLincoln County 95 kmWhitman County 102 kmGarfield County 110 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
9:06 am PDT on 8 June 2018 ()
Where
14 km (9 mi) N of Connell, WA · earthquakes near Connell
Magnitude
M 1.7 (ml)
Depth
-0.3 km below the surface
Felt
no reports yet
Nearest
Franklin County, 28 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3038 days ago

A magnitude 1.7 earthquake was recorded 14 km (9 mi) N of Connell, WA, at 9:06 am PDT on 8 June 2018 (16:06 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Othello, Warden.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 10 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 95× the energy of this one
  4. This earthquake M 1.7 about 10 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 46.7887, -118.8717. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Franklin County, WA 28 km (17 mi) S earthquakes near Franklin County
Adams County, WA 37 km (23 mi) NE earthquakes near Adams County
Grant County, WA 65 km (41 mi) NW earthquakes near Grant County
Walla Walla County, WA 67 km (41 mi) SSE earthquakes near Walla Walla County
Benton County, WA 80 km (49 mi) SW earthquakes near Benton County
Columbia County, WA 92 km (57 mi) SE earthquakes near Columbia County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

20 earthquakes have been recorded within 50 km since this one.

  1. 2.0 16 km S of Mesa, Washington
  2. 1.8 10 km WSW of Hatton, Washington
  3. 1.7 5 km W of Warden, Washington
  4. 1.6 17 km NNE of Pasco, Washington
  5. 1.7 15 km S of Mesa, Washington
  6. 1.6 15 km SW of Odessa, Washington
  7. 1.6 9 km W of Ritzville, Washington
  8. 1.5 24 km SSW of Odessa, Washington
  9. 2.1 12 km NW of Lind, Washington
  10. 1.9 5 km W of Warden, Washington
  11. 2.2 14 km NW of Othello, Washington
  12. 1.7 13 km N of Kahlotus, Washington
  13. 1.5 3 km WSW of Warden, Washington
  14. 1.9 1 km WNW of Warden, Washington
  15. 1.6 16 km WNW of Lind, Washington

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.